Thanks for the reply Duncan.
The car is already here in Canada but I had to pay the 6,1% duty.
Since the car is a 1970, I don't want to pay it if I don't have to.
And according to these guys, I shouldn't.
Import Car To Canada! » Do I have to Pay Tax to Import a car from U.S. to Canada?
Here is a list of tax/duty costs that you could potentially pay at the border:
Duty Amounts:
Vehicles Manufactured in North America: Duty Free
Vehicles Manufactured outside North America: 6.1% on average
Vehicles over 25 years old: Duty Free